Evaluation of polymeric thin film waveguides as chemical sensors

Elizabeth M. Bowman; Lloyd W. Burgess

doi:10.1117/12.24794

1 March 1991 Evaluation of polymeric thin-film waveguides as chemical sensors

Elizabeth M. Bowman, Lloyd W. Burgess

Proceedings Volume 1368, Chemical, Biochemical, and Environmental Fiber Sensors II; (1991) https://doi.org/10.1117/12.24794
Event: SPIE Microelectronic Interconnect and Integrated Processing Symposium, 1990, San Jose, United States

Abstract

Polymeric optical waveguides were employed as sensors, based on the chemical interaction of the polymer with its environment. As the polymer preferentially absorbs chemicals from a sample matrix, the waveguiding properties of the polymeric film change. These changes in the refractive index and the thickness of the film are expressed as shifts in the waveguide propagation modes, which can be monitored to provide a very reproducible sensor signal. Because the waveguides are typically less than one micron thick, these sensors also have short response rates. An evaluation of the responses of several polymeric thin film waveguides and their cross sensitivities is presented.

Citation Download Citation

Elizabeth M. Bowman and Lloyd W. Burgess "Evaluation of polymeric thin-film waveguides as chemical sensors", Proc. SPIE 1368, Chemical, Biochemical, and Environmental Fiber Sensors II, (1 March 1991); https://doi.org/10.1117/12.24794

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